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Updated: Aug 7, 2026

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
Preferential site occupancy of krypton atoms on free argon-cluster surfaces
M Lundwall1, A Lindblad, H Bergersen
1Department of Physics, Uppsala University, P.O. Box 530, SE-751 21 Uppsala, Sweden. marcus.lundwall@fysik.uu.se
Abstract:
Argon clusters have been doped with krypton atoms in a pick-up setup and investigated by means of ultraviolet and x-ray photoelectron spectroscopy (UPS and XPS). The width of the krypton surface feature in the XPS spectra from mixed krypton/argon clusters has been studied and found to be narrower than in the case of homogeneous krypton clusters. By considering known spectral broadening mechanisms of the cluster features and the electron binding energy shift of the cluster surface feature relative to the atomic signal, we conclude that krypton ad-atoms preferentially occupy high-coordination surface sites on the argon host-cluster.
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